It just goes to show that something trendy and new is not always for you, PA3x does the job why get a 4X? then again for me I don't have that big of setup that Zuki has but the P3x was just as good as the 4X. The only BEEF that I have with KORG is that if your keyboard needs parts they are not available for both models so, you need to have at least 2 to have a backup.